Arvados

The bottom of http://doc.arvados.org/install/install-workbench-app.html tells the user to run the Rails console.

This needs to be done as the same user that will run Rails (www-data on Debian; nginx on Red Hat). Otherwise, Rails may create cache files with bad ownerships, causing errors when it tries to update those cache files later.

http://doc.arvados.org/install/install-arv-git-httpd.html already gives the user more complete instructions for running the Rails console. Follow its example everywhere we tell users to run the Rails console.